River Mersey Estuary at Dock Road South CSO
This is a sewage discharge monitoring station, which is usually a type of Event Duration Monitor (EDM).
These stations themselves are designed to mitigate the impact of heavy rainfall by discharging, under permitted conditions, any overflow into a water body. They are often actively discharging during flood events.
This page presents the data acquired by the monitoring system for this discharge station.
These stations themselves are designed to mitigate the impact of heavy rainfall by discharging, under permitted conditions, any overflow into a water body. They are often actively discharging during flood events.
This page presents the data acquired by the monitoring system for this discharge station.
Operational Summary - 2021-2024
5049.5 hours | 14.4
The declared body of water receiving this discharge is the "River Mersey Estuary"
This station has discharged sewage 523 time(s).
The station has discharged for a total of 5049.5 hour(s).
This is 14.4% of the time which we have data for.
In total: 210 day(s)* of elapsed time.
96.7 | 1139.5 hours
This monitor has been operational for 96.7% of its total time we have data for.
There are 1139.58 hours unaccounted for due to downtime of the monitor.
The worst year in our records for the "Dock Road South CSO" is 2023, discharging sewage for 1623.6 hours of the year.
Uptimes below 90% (red line) should be accompanied by a reason
*This is total time in days, not individual days.
Yearly Summary
Most Recent Year - 2024
1423 hours | 16.19
The declared body of water receiving this discharge is the "River Mersey Estuary"
This station discharged sewage 137 time(s) during 2024.
The station discharged for a total of 1423 hour(s).
This is around 59 day(s)* or 16.19% of the year.
The following reasons have been given for the high spill frequency in 2024:
Data Collection - Confirmed Exceptional Weather
The following comments have been given on the station operators intended actions:
Operational Improvement Ongoing
87.9 | 1059.3 hours
This monitor was operational for 87.9% of the year.
Leaving 1059.3 hours unaccounted for in the data.
This falls below the 90% threshold where a reason should be given
The following reasons have been given for the downtime in 2024:
Comms Failure / Issue
The following description has been given for downtime related actions intended, or taken, by the operator in 2024:
N/A - Ongoing Investigation
*This is total time in days, not individual days of the year.
Permit & Governance
| Attribute | Value |
|---|---|
| Governing Body | The Environment Agency |
| Operator | United Utilities |
| Primary Permit # | 016810665 |
| Secondary Permit # | WIR0131 |
2023
1623.6 hours | 18.53
The declared body of water receiving this discharge is the "River Mersey Estuary"
This station discharged sewage 158 time(s) during 2023.
The station discharged for a total of 1623.6 hour(s).
This is around 67 day(s)* or 18.53% of the year.
The following reasons have been given for the high spill frequency in 2023:
Not Asset Maintenance - Hydraulic Capacity
The following comments have been given on the station operators intended actions:
N/A - Hydraulic Capacity
100 | 0 hours
This monitor was operational for 100% of the year.
Leaving 0 hours unaccounted for in the data.
*This is total time in days, not individual days of the year.
Permit & Governance
| Attribute | Value |
|---|---|
| Governing Body | The Environment Agency |
| Operator | United Utilities |
| Primary Permit # | 016810665 |
| Secondary Permit # | WIR0131 |
2022
754.4 hours | 8.61
The declared body of water receiving this discharge is the "Mersey Estuary"
This station discharged sewage 114 time(s) during 2022.
The station discharged for a total of 754.4 hour(s).
This is around 31 day(s)* or 8.61% of the year.
The following reasons have been given for the high spill frequency in 2022:
Not Asset Maintenance - Hydraulic Capacity
The following comments have been given on the station operators intended actions:
N/A - Hydraulic Capacity
100 | 0 hours
This monitor was operational for 100% of the year.
Leaving 0 hours unaccounted for in the data.
*This is total time in days, not individual days of the year.
Permit & Governance
| Attribute | Value |
|---|---|
| Governing Body | The Environment Agency |
| Operator | United Utilities |
| Primary Permit # | 016810665 |
| Secondary Permit # | WIR0131 |
2021
1248.4 hours | 14.25
The declared body of water receiving this discharge is the "River Mersey Estuary"
This station discharged sewage 114 time(s) during 2021.
The station discharged for a total of 1248.4 hour(s).
This is around 52 day(s)* or 14.25% of the year.
The following reasons have been given for the high spill frequency in 2021:
Not Asset Maintenance - Hydraulic Capacity
The following comments have been given on the station operators intended actions:
N/A - Hydraulic Capacity
100 | 0 hours
This monitor was operational for 100% of the year.
Leaving 0 hours unaccounted for in the data.
*This is total time in days, not individual days of the year.
Permit & Governance
| Attribute | Value |
|---|---|
| Governing Body | The Environment Agency |
| Operator | United Utilities |
| Primary Permit # | 016810665 |
| Secondary Permit # | WIR0131 |
FloodMapper is not affiliated with this monitoring stations operator(s) or any other entities that may be mentioned on this page.
All trademarks and registered trademarks are the property of their respective owners.
Operator comments are presented, unedited, as they were received by us and do not reflect our views or position
Local Information
Station Data Information
Station overseen (meaning either provided, or regulated) by: The Environment Agency
The information displayed here is used under license. We are not affiliated with any governing, or other, bodies. Nor do they necessarily endorse us, or us them.
Please note that FloodMapper does not verify or check the accuracy of the data provided by third parties. The data is used as received from the source. Any underlying errors, inconsistencies, or inaccuracies in the original data will be reflected in the information presented on our platform. Users are advised to exercise their own judgment and caution when using the data for decision-making purposes.
Information about our data sources and licenses can be found
The information displayed here is used under license. We are not affiliated with any governing, or other, bodies. Nor do they necessarily endorse us, or us them.
Please note that FloodMapper does not verify or check the accuracy of the data provided by third parties. The data is used as received from the source. Any underlying errors, inconsistencies, or inaccuracies in the original data will be reflected in the information presented on our platform. Users are advised to exercise their own judgment and caution when using the data for decision-making purposes.
Information about our data sources and licenses can be found
FloodMapper is an independent site and is not associated with any government bodies (e.g. Environment Agency).
Copyright © FloodMapper 2023-2024.
All Rights Reserved